WHITEWATER, Wis. -

The son of Republican State Sen. Neal Kedzie is asking Whitewater police to suspend their investigation into an attack last October.

Sean Kedzie was allegedly attacked in his front yard Oct. 19. He told police he was attacked around bar time by two men who were stealing a Mitt Romney for president sign from his yard.

He told police he knew who one of his attackers was, but investigators said they were unable to turn up any evidence during the questioning of the suspected attacker and witnesses.

According to police documents, Kedzie told police his attackers used expletives towards Romney and said "Go Obama" during the attack.

But a neighbor who said he saw and heard the whole incident told police he heard no one say anything political or even the names of presidential candidates, according to the documents.

The witness told police he heard one of the attackers say something along the lines of, "You shouldn’t have picked a fight with two guys."

Kedzie said that neighbor was far enough away that it was unlikely he heard everything in the fight.

Kedzie asked police last Tuesday to suspend the investigation.

Kedzie said Monday that he stands by his story 100 percent and believes the attack was politically motivated.

But he acknowledged there's not enough evidence for police to pursue who he believes is one of his attackers.

"The evidence was kind of in his favor so there just really wasn't a solid case to be built anywhere," Kedzie said. "(The police are) not closing the case but, for now, until there's something else to pursue, they can't really go anywhere with it."

Kedzie said the case can be re-opened if more evidence comes forward or if he asks police to re-open the case.